What is GMAX Testing?
G-max testing measures the shock attenuation performance of a sports surface.
Our specialized equipment can be used on both natural or artificial turf surfaces. G-max testing refers to a result in gravities which is the ratio of the maximum acceleration/deceleration that is experienced during an impact. A high result means that a surface has low shock attenuation characteristics.
The tolerance for results are specified in ASTM Standards F355 and ASTM 1936.
G-max performance will vary throughout the lifespan of a specific field. As a general rule of thumb, the G-max result will increase as a field ages meaning that users are more likely to sustain injuries on older fields. This is of course dependent upon factors such as the constructional make-up of a particular field, for example is a shockpad installed underneath the artificial grass.
G-max consistency will also be largely affected by the level of maintenance being carried out to the field.
Industry experts recommend that G-max testing should take place on an annual basis in order for facility operators to demonstrate their due diligence and commitment to the field users.
Performance GMAX Impact Testing allows facility operators and owners to demonstrate a proactive approach to due diligence and safety. Our Test reports can potentially help protect field and safety surface owners from lawsuits in the case of injury. Test reports will also ascertain if any remedial action is required to be carried out on the field or safety surfacing and drastically reducing the risk of injury to users and players. Some manufacturers surface warranty require an annual GMAX test in order to maintain the validation of surface warranty. Please contact us if your Field or safety surfacing is in question or to have piece of mind we will give you a quote and set up a time to get you the answers you need.New Paragraph
What is HIC (Head Injury Criterion) testing?
The HIC is a measure of the likelihood of head injury arising from an impact. Head Injury is an injury that results in trauma to the skull or brain. the Hickmans can be used to assess safety related to vehicles, personal protective gear, sport equipment and playground equipment. "Wikipedia"
How is the HIC test carried out?
The wireless Mic meter consists of hemispherical mass containing an acceleration sensor. the inspector hold the device up to the required height. To carry out the test, the device is dropped from fall heights. The device registers the acceleration during the fall and the rapid deceleration during the impact with the ground. The results are stored in the device and uploaded to a computer. The results of the test into a HIC value which indicates whether the shock attenuation of the surface is sufficient based on the applicable standard (NEN-EN- 1177.)
When is a HIC Test necessary?
Playgrounds are outfitted with artificial surface material which has a certified shock attenuation rating. Due to wear and tear and the influence of the elements, the shock attenuation properties of the surface can deteriorate over time. In such cases, our inspectors carry out a HIC test to verify whether the surface material still meets the standards.
